Whopping 2,492 carats diamond is second-biggest ever discovered in a mine The largest diamond found in more than a century has been unearthed at a mine in Botswana, and the country’s president showed off the fist-sized stone to the world at a viewing ceremony Thursday. The Botswana government says the huge 2,492-carat diamond is the second-biggest ever discovered in a mine. It’s the biggest diamond found since 1905. The as-yet-unnamed diamond was presented to the world at the office of Botswana President Mokgweetsi Masisi. It weighs approximately half a kilogram and Masisi was one of the first to get to hold it. “It is overwhelming,” Masisi said. “I am lucky to have seen it in my time.” He gasped and said “wow” before calling senior government officials over to take a clos...
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Top predators could ‘trap’ themselves trying to adapt to climate change, study shows
As climate change alters environments across the globe, scientists have discovered that in response, many species are shifting the timing of major life events, such as reproduction. With an earlier spring thaw, for example, some flowers bloom sooner. But scientists don’t know whether making these significant changes in life history will ultimately help a species survive or lead to bigger problems. A study published the week of June 27 in the Proceedings of the National Academy of Sciences shows for the first time that a species of large carnivore has made a major change to its life history in response to a changing climate — and may be worse off for it. An African wild dog mother and pup. Photo: Bobby-Jo Vial A team led by researchers at the University of Washington, in collabora...
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